This may be tricky. What does the pronoun “We” refer to? If you mean “we” are physical beings in that we possess a physical body, I’d say you’re presupposing your conclusion here. If you mean we
are physical things, then I’d say this premise contradicts your conclusion.
- It is reasonable to think that i have freewill. Free choice is only possible if my choice is not the inevitable out come of a process.
What is free-will? The compatibilist may say S is free with respect to some choice only if S is the cause of that choice. This understanding of free will is compatible with S being determined to cause that choice: the only thing that matters is that S causes it. This premise challenges the compatibilists who currently reign, there’d be a tough fight here. You’ve also got the hard incompatibilists like myself: free-will isn’t compatible with determinism or indeterminism. Your second sentence seems to indicate a choice is only free if there is indeterminacy in its causal history. If that’s the case, I’ll pose the luck objection, which I think suffices to defeat the theory you’re implicitly advocating.
- Physical change is a process with inevitable effects.
The reigning interpretation of Quantum Mechanics says causation is probabilistic. Now, given some initial conditions and laws of nature, some event might necessarily occur: it’d have a probability of 1.0 given its initial conditions and governing laws. But, there are numerous physical changes which are indeterminate. (Or so the current majority of relevant scientists think, who knows if that’ll change)
- If something is not a physical process then it is not by definition physical.
Hmm. This basket ball isn’t a physical process, neither is this lap top, or those rocks. But, of course they’re physical. Did you mean "if something is not in physical process then it is not by definition physical? If so, I’m totally down with that.
- In reference to **premise 3 **and 2, it follows that “Free Choice” cannot be the outcome of a physical process, and given premise 4 it therefore follows that the sufficient cause of my free-choice is not a physical process; if it is in fact true that i do have freewill.
I think I resist (5) on the basis of my objections so far. Although, I will say, it’s generally conceded that a libertarian free-will strongly implies dualism. However, you’ve got prominent libertarian advocates like Robert Kane who argues for libertarianism on the basis of neuroscience (well…partly, anyways).